I have a Nikon D7000 and a Nikon SMZ800 microscope with "trinocular head," so I can shoot photos through the microscope.

Focusing through the range finder is possible but difficult.

Live view on the camera's LCD screen is a better way to focus, at least when it works. In live view I an examine the lcd screen with a hand held magnifier while manually focusing the microscope, slowly and accurately.

However, the live view only shows a well-illuminated image for 3-5 seconds, and then dims significantly. When the live view dims I can still see the image, but not well enough to focus.

Setting or re-setting the display brightness does not seem to help. I have never seen this LCD screen dimming happen when connected to a camera lens. Only when connected to the microscope.

I can struggle on with the range finder. But the LCD screen is essentially useless. Unless there is a way to fix this.

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